CV56 S-band magnetron,
the first strapped magnetron to go into production. At 15kV/15A input this
gave between 80 and 100kW peak output power at an efficiency of 40%. It
was used in the Type 271Q naval radar. See also CV76
which is a higher power version.

Above: An x-ray of the CV56 showing the strapping.
Below: A picture of a dismantled CV56 (Photo by Mark Atherton)